#!/bin/sh

 login=$1
 month=$2
 day=$3
 hour=$4

if [ $# -eq 4 ]
then

        cat /etc/passwd | grep -wq $login
                if [ $? -eq 0 ]
                then
                        echo $login registruotas
                        time="$( last -100 "$login" | grep -e " $2 $3" | awk '{print $7}')"
                        for entry in $time
                        do
                        val=$(echo $entry  | cut -c0-2)
                        if [ $val = $hour ]
                        then
                                echo "Jungesi  ${entry:3:2} minute"

                                exit 0
                        fi
                        done

                else
                        exit 255
                fi
else
        kint="$(cat /var/lab/ld2t/valandos.txt)"
        count=0
        for entry in $kint
        do
                time="$( last -100 "$login" | grep -e " $2 $3" | awk '{print $7}')"
                for line in $time
                do

                        if [ $entry = ${line:0:2} ]
                        then
                        echo "$entry val jungesi ${line:3:2} min"
                        count=$((count+1))
                        else
                                echo "$entry val nesijunge"
                        fi

                done
        done
        echo "$count kartai"

fi